@article{1103043665,
author = {Erd\H os, Paul and Shapiro, Harold N.},
title = {On the least primitive root of a prime.},
journal = {Pacific J. Math.},
volume = {7},
number = {4},
year = {1957},
pages = { 861-865},
language = {en},
url = {http://dml.mathdoc.fr/item/1103043665}
}
Erdős, Paul; Shapiro, Harold N. On the least primitive root of a prime.. Pacific J. Math., Tome 7 (1957) no. 4, pp. 861-865. http://gdmltest.u-ga.fr/item/1103043665/